Crushing machine



Dec. 11, 1928.

vy. KILIGGETT CRUSHING MACHINE Filed June 8 1923 Jmen- 1447/04/77 K L/gggeffl Patented Dec. 11, 1928.

UNITED STATE WILLIAM K. LIGGETT, 0F COLUMBUS, OHIO, v

-TURING COMPANY, OF COLUMBUS, OHIO, ACORPORAIION cnusnmo Application flied June 8,'

The present invention relatesto a crushing or like machine of that class which consists in general of a casing and a'rotor mounted in the casing adapted through coopera tion with the casing walls to reduce material fed thereto. v

The rotor of such machines consists in general of a rotor body or frame to which are secured hammers or'tooth elements which are adapted to directly engage and reduce the material to be treated. The machine with which the present invention is concerned is of the type wherein the hammers or tooth members are secured in fixed position to the rotary body.

The .present invention, as hereinafter claimed, has particular reference to the form ammers or tooth members themselves,

them on a particuand means for mounting lar form of rotary frame. I

The novel features to be hereinafter set forth are not dependent on any particular form of casing, and consequently, in the accompanying drawings:

Figure is a-sect1on througha casing of any suitable form showing the rotor mounted therein and in side elevation.

Figure 2'is a cross sectional view of therotor shown inFigure 1.

Figure 3 is a perspective of the hammer or tocgh member illustratedin Figures 1 and 2, an

Figure 4 is a cross sectional view of a rotor comprising a modified form of rotaryframe and a modified form of tooth member. s

Referring to Figure 1, 10 indicates the casing of the machine, which, as above'stated,

may be of any desired form so far as the present invention is concerned. The casing is provided with bearings 11 and 12, in which is journalled .a shaft 13, on which the rotor is mounted. As here shown, shaft 13 is provided at one end with a gear wheel 14 adapted to be engaged by an appropriately disposed drive gear not shown.

The rotary frame is formed of a series of disks 15 fixed in'spacedrelation upon shaft 13. These disks are provided with aligned apertures remote from their axes, through which are passed axially extending-rods 16,- and tooth members 17 are mounted upon these rods between the various disks. Members 17 are preferably formed with a plurality {three (5: being shown} of equally rods between-a pair or 01110. r

1923. Serial to. 344,168.

spaced radiating arms 18,-19 and 20, each of.

.which is provided with an aperture 21, adapted to receive one of the supporting rods 16,

srATEN-r OFFICE, I

assrenon TO THE JEFFREY Manama:

The proportionaof the parts are such that when in operative position the apertures of two of the arms will be engaged by the suparm rigidly in radial position to form a material engaging tooth. These tooth members 17 are preferably omitted from certainof the spaces between the disks15,'this resultporting rods 16, thereby, holding the third seen, of substantially trefoil shape, and their arms are, as here disclosed, disposedso that elements 17 maybe; turned, after the forward edge of one arm has become dulled in service,

turn has been used.

According to Figure 4 the tooth members:

apertures adapted-to receive rods 24, which pass through appropriately spaced apertures in the ends of members 22.

will be seen that they In each instance it tooth member is engaged by a plurality of of adjacent disks so that 1t 1s held 1n absolutely fixed relation while still permitting ready removal for alteration of positon or replacement. It will be obvious that various modificatlOIlS of the devices of the invention will be possible without departure from the spirit of the invention, and accordingly it is to be understood that I donot limit myself except as determined in the following claims.

' What I claim is:

to supplyshar teeth: for the rotoruntil each side of each rin in i,

are pre er symmetrically 1. In a-machineof the class described, a

support, radially disposed crushing from one another on said support, and

rotary elements spaced axiall and removably mounte a plurality of circumferentially disposed fastening means to rigidl secureea'ch of said crushing elements to said support.

2. In a machine of the class described, a rotary support, radially disposed crushing elements having plurality of arms remov- 7' ably mounted on said support,.and a phiralityof fastening means engaging .at least 1 two arms of said crushing elements torigidly l-radially disposed arms removably and a plurality of fastening means for two of the radiating'arms'to rigon said support,

secure them to said support." I

3. In a machine of the class described,'a rotary su port, radially disposed crushing elements mounted idly secure said crushing elements to said 7 i support-.--

' 4, In a machine of the class described, a rotary support formed of a plurality of spaced- .apart disk like members, a

tween sai sks,

nients constant rigid position. the class described, a

spaced'a art disks, crushing elements having a plurality of radiating arms removably mounted between said disks with one of said arms extending radially from said support,

and a plurality ofcircumferentially spaced fastening means to said crushing elements rigidly to said disks.

rotary support formed of a plurality of if; spaced apart ,6. In a machine of thefclassdescribed, a-

disk likemembers, a plurality of circumferentially disposed crushing elements having'three' symmetrically disposed arms r'emovably mounted between said disks with one of the arms extending radially from said disks, and .a plurality of circumferen .tially'spaced fastening means for each crush- I in g; element. extending through the other shaped crushin aving three symmetrically "placed I spaced a art disc-like members,

"posed crushing el securethe other arms of arms thereof and said disks to secure the crushing'elements rigidlyin place.

:7 In a machine' of the class described, the" I disks, a plurality of substantially, trefoil ed between sai disks with two of their arms *housed within the peripheryof said disks 1 and the third arm extending-radially there--.

from, and a plurality of circumferentially spaced tie rods traversing apertures in said elements removably mount.-

combination of a plurality of spaced apart l disks and the housed arms of said crushing elements to secure them rigidly in place. A crushing element ior crushing machines of-substantially trefoil shape, each arm of-said element having an aperture symmetrically placed with respect to the apertures in the other arms to provide meansfor securing said crushing element to a suit-s able support, the aperturein two of said arms being utilizable-to secure the third arm in working position.

9. In a machine ofthe class described, a

rotary support formed ofa plurality of a plurality of radia y'projecting circumferentially dis ements mounted-between said disc-like members,

the portion of each crushing element between said disc-like members being provided with a plurality of perforations', and rod-like members extending through said disc-like members and through Iat least two perforations of eachfof 'said 1' crushing elements to secure said crushing elementsin constant rigid radial position.

In testimony whereof have hereunto my hand; H I I WILLIAM n eenrr. 

